Be a Voice Nerd
Here are some great articles that relate to singing and voice training. Some of them are pretty dense and scientific, but give ’em a look anyway; you just might learn something cool.
Anatomic Connections of the Diaphragm:
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3731110/
A thorough exploration of how the diaphragm affects, well, everything.
A Three-Dimensional Atlas of Human Tongue Muscles:
Everything you ever wanted to know about the tongue…and then some.